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ISO 6851:1987

Photography — Processing waste — Determination of total amino nitrogen — Microdiffusion Kjeldahl method

Nov 26, 1987
95.99 Withdrawal of Standard   Dec 20, 2001

General information

95.99     Dec 20, 2001

ISO

ISO/TC 42

International Standard

37.040.30     13.030.30  

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Scope

Describes a method for determining the total organic nitrogen and any ammoniacal nitrogen present in photographic processing waste. This amino nitrogen is converted to ammonia which is subsequently determined by absorption into boric acid in a microdiffusion cell along with any ammonia originally present.

Life cycle

NOW

WITHDRAWN
ISO 6851:1987
95.99 Withdrawal of Standard
Dec 20, 2001

REVISED BY

ABANDON
ISO/DIS 6851

PUBLISHED
ISO 6851:2001